ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

[thats_me]

thanks now got it

iwas just confused i thought it meant the mass of the metal

np

 

[WhizAly]

thanks now got it

iwas just confused i thought it meant the mass of the metal

It differs according to the reagent if excess acid was used the volumes will be the same..If excess solid is used,the volumes will differ..probably

 

[thats_me]

It differs according to the reagent if excess acid was used the volumes will be the same..If excess solid is used,the volumes will differ..probably

yea but this is a diff case its just related to rate of reaction

 

[Ahmedm96]

yea but this is a diff case its just related to rate of reaction

yea that differ but they my include this also and may let you choose from factors like temp and concentration of acid and the same volume of gas is produced

 

[thats_me]

yea that differ but they my include this also and may let you choose from factors like temp and concentration of acid and the same volume of gas is produced

that can happen i meant specifically for this reaction ...

 

[Toomuch1995]

In 2003 paper 1 biology question 31 how come its 1 in 2 when i think its 1 in 3 or 4 well its about genetics

 

[thats_me]

In 2003 paper 1 biology question 31 how come its 1 in 2 when i think its 1 in 3 or 4 well its about genetics

look,
brown eyes is dominant (B) blue eyes is recessive (b)
so Bb and bb
so offspring genotype will be :Bb ,Bb,bb,bb
so its 2in4 i.e 1in2

 

[Toomuch1995]

Thanks now i get
The thing is that i dont improve when solving much either raise by three marks or go down by four marks everytime

 

[Toomuch1995]

By the way thats_me how many papers u solved?

 

[thats_me]

By the way thats_me how many papers u solved?

i did 10 11 and on9

 

[thats_me]

Thanks now i get
The thing is that i dont improve when solving much either raise by three marks or go down by four marks everytime

Try understanding the questions u get mistakes in & u knw "Practice make a man perfect' so dun worry n keep practicin..

 

[Ahmedm96]

november 2000 bio 13 and 14

 

[thats_me]

november 2000 bio 13 and 14

link?

 

[Toomuch1995]

thanks again thats_me

 

[Toomuch1995]

from where i can get older than 2003 multiple choice for biology

 

[thats_me]

from where i can get older than 2003 multiple choice for biology

here http://www.xtremepapers.com/community/threads/paper-1-bio-1996-onwards.17203/#post-314340

 

[Ahmedm96]

http://imageshack.us/photo/my-images/441/photo1278k.jpg/

 

[Skynox]

http://imageshack.us/photo/my-images/441/photo1278k.jpg/

That waterproof 'elly prevents the loss of water by transpiration and keeps the moisture inside the leaf.So,the leaf which had the upper surface covered became dry and brown as water is lost from the lower surface.While the one which had both covered became soft and green as no water is lost.The one with the lower surface covered became green so lower surface has more stomata than the upper one,in general this applies to most leaves.
~~~~~~~~~~~
The area which contained starch is where photosynthesis takes place.This is where light reaches it and also that area should contain the green chloropyll so that area is C.You should've noticed the paper placed is black not transparent

 

[salvatore]

Please explain the answer.. super confused!

 

[Skynox]

Please explain the answer.. super confused!

It's obvious that this reaction is not a redox reaction…And that's why the oxidation state of the CHROMIUM doesn't change…If it was about te chromate then the oxidation state will also be -2 in both cases…THE PH OF the mixture increases since excess alkali is added…